ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.0 > H40.01 H40.01 Open angle with borderline findings, low risk Non-Billable/Non-Specific Applicable To Open angle, low risk Codes H40.011Open angle with borderline findings, low risk, right eyeH40.012Open angle with borderline findings, low risk, left eyeH40.013Open angle with borderline findings, low risk, bilateralH40.019Open angle with borderline findings, low risk, unspecified eye